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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A323806 Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 10.

Table of values

n a(n)
10 0
11 6894720
12 125516160
13 1586345040
14 16759964880
15 158705713320
16 1400777573016
17 11828309150490
18 97341704612482
19 791331470025483
20 6418149695049249
21 52479230675397803
22 435575075749110957
23 3649912769065068556
24 30745771540084745428
25 259496462836442105424

List of values

[0, 6894720, 125516160, 1586345040, 16759964880, 158705713320, 1400777573016, 11828309150490, 97341704612482, 791331470025483, 6418149695049249, 52479230675397803, 435575075749110957, 3649912769065068556, 30745771540084745428, 259496462836442105424]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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